Abstract:
The invention relates to a method for generating syngas (5). Hydrocarbon (2) is thermally decomposed into hydrogen and carbon in a first reaction zone (Z1), and hydrogen produced in the process is conducted from the first reaction zone (Z1) to a second reaction zone (Z2) in order to react the hydrogen with carbon monoxide (4) in the second reaction zone so as to produce water and carbon monoxide. The invention is characterized in that the energy required for the thermal hydrocarbon decomposition in the first reaction zone (Z1) is supplied from the second reaction zone (Z2).
Abstract:
The invention relates to a process for the parallel preparation of hydrogen, carbon monoxide and a carbon-comprising product, wherein one or more hydrocarbons are thermally decomposed and at least part of the pyrolysis gas formed is taken off from the reaction zone of the decomposition reactor at a temperature of from 800 to 1400°C and reacted with carbon dioxide to form a gas mixture comprising carbon monoxide and hydrogen (synthesis gas).
Abstract:
The invention relates to a reactor (1) in the form of a cylinder or prism for carrying out autothermal gas-phase dehydrogenation of a gas flow (2) containing hydrocarbons by means of a gas flow (3) containing oxygen so as to obtain a reaction gas mixture, on a heterogeneous catalyst, which is designed as a monolith (4), the interior of the reactor (1) being divided by a circular cylindrical or prismatic gas-tight housing (G) arranged in the longitudinal direction of the reactor (1) into an inner region (A) having one or more catalytically active zones (5), in each of which a respective packing of monoliths (4) stacked one on the other, one next to the other, and one behind the other and, before each catalytically active zone (5), a respective mixing zone (6) having fixed installations are provided, and an outer region (B) arranged coaxial with the inner region (A), said reactor being characterized in that the inner region (A) is insulated from the outer region (B) of the reactor by means of a microporous high-performance insulating material (15) having a thermal conductivity value (λ) less than 0.05 W/m*K at temperatures up to 700 °C.
Abstract:
The invention relates to a method for the parallel production of hydrogen and of one or more carbon-containing products. In the method, hydrocarbons are introduced into a reaction chamber (R) and are thermally decomposed into carbon and hydrogen in the presence of a carbon-rich granulated material (W). The invention is characterised in that at least a portion of the thermal energy necessary for the decomposition of the hydrocarbon is introduced into the reaction chamber (R) via a gaseous heat transfer medium.
Abstract:
The invention relates to a process for workup of a stream (1) comprising butene and/or butadiene, butane, hydrogen and/or nitrogen and carbon dioxide, comprising the following steps: (a) absorption of the stream (1) comprising butene and/or butadiene, butane, hydrogen and/or nitrogen, with or without carbon dioxide, with a mixture (5) comprising 80 to 97% by weight of N-methylpyrrolidone and 3 to 20% by weight of water to obtain a stream (9) comprising N-methylpyrrolidone, water, butene and/or butadiene, and butane, with or without carbon dioxide, and a stream (7) comprising hydrogen and/or nitrogen and butane, (b) extractive distillation of the stream (9) comprising N-methylpyrrolidone, water, butene and/or butadiene, and butane, with or without carbon dioxide, with a stream (13) comprising 80 to 97% by weight of N-methylpyrrolidone and 3 to 20% by weight of water to separate the stream (9) comprising N-methylpyrrolidone, water, butene and/or butadiene, and butane, with or without carbon dioxide, into a stream (17) comprising N-methylpyrrolidone, water, butene and/or butadiene, and a stream (15) comprising essentially butane, with or without carbon dioxide, (c) distillation of the stream (17) comprising N-methylpyrrolidone, water, butene and/or butadiene into a stream (23) comprising essentially N-methylpyrrolidone and water, and a stream (21) comprising butene and/or butadiene.